Poster Presentations

Advanced Techniques

#5 Dosimetric Comparison Between Volumetric Modulated Arc Therapy and Intensity modulated proton therapy for whole brain irradiation with hippocampal sparing. Presenter: Taweap Sanghangthum, Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Chulalongkorn University, Thailand; Author: Taweap Sanghangthum; Co-authors: Sivelee Suriyapee; Tanawat Tawonwong

#6 Independent Verification of the Pre-Installed Beam Model in Helical Tomotherapy. Presenter: Maria Do Carmo Lopes, Medical Physics Dept., IPOCFG, E.P.E., Coimbra, Portugal; Authors: Maria Do Carmo Lopes; Tania Filipa Sobrinho Dos Santos; Tiago Ventura; Miguel Capela

#25 On the Dose Linearity of Detectors for Small Field Dosimetry. Presenter: Božidar Casar, Institute of Oncology Ljubljana, Slovenia; Author: Božidar Casar; Co-authors: Ignasi Mendez; Eduard Gershkevitsh; Sonja Wegener; David Jaffray; Robert Heaton; Csilla Pesznyak; Gabor Stelczer; Wojciech Bulski; Krzysztof Chełminski; Georgiy Smirnov; Natalia Antipina; Andrew W. Beavis; Nicholas Harding; Slaven Jurković; Min-Sig Hwang; M. Saiful Huq

#28 TPS commissioning for IMRT/VMAT. Presenter: Ismail Zergoug, Medical Physics department - Oncopole l'espoir Oran Algeria, Algeria; Author: Ismail Zergoug; Co-Authors: Nawel KLOUCH; Hakima BAHI

#37 Development of Proton Range Verification by Use of Titanium Implants and PET. Presenter: Claus Maximilian Baecker, West German Proton Therapy Centre Essen, Germany; Authors: Claus Maximilian Bäcker; Christian Bäumer; Carina Behrends; Ken Herrmann; Walter Jentzen; Sandra Kazek; Kevin Kröninger; Fleur Spiecker; Beate Timmermann; Jens Weingarten; Jörg Wulff

#43 Simple Method for Evaluating Flatness and Symmetry Based on EPID and MATLAB. Presenter: Ezequiel Larger, Leben Salud, Argentina; Authors: Ezequiel Larger; Maria Sol Gallo; Joaquin De Brida; Ricardo Ruggeri

#65 Assessing the Target Shift and its Effect on Dose Distribution Using Deformable Image Registration Method for Head and Neck Patients Undergoing IMRT. Presenter: Aik Hao NG, Ministry of Health Malaysia, Malaysia; Authors: Aik Hao NG; Hwee Shin Soh

#67 Dosimetric Comparison Between VMAT and Dedicated Stereotactic Planning Tool for Single Isocenter Stereotactic Radiotherapy for Patients with Multiple Brain Metastases. Presenter: Abdelkader Toutaoui, Hôpital Chahids Mahmoudi, Algeria; Authors: Abdelkader Toutaoui; Billel Metchat; Samir Bencheikh; Ryma Louelh; Mourad Belmessaoud; Hamida Mahmoudi; Tassadit Baroudi; Soraya Rili

#71 Small Field Output Correction Factors at 18 MV. Presenter: Jonas Ringholz, University of Wuerzburg, Germany; Author: Jonas Ringholz; Co-authors: Sonja Wegener; Otto A. Sauer

#77 Commissioning of an X-Ray Biological Research Irradiator. Presenter: Carla Mota, State University of Rio de Janeiro, Algeria; Authors: Carla L. Mota; Arissa Pickler; Andrea Mantuano; Camila Salata; Luis Alexandre Goncalves Magalhaes;

#91 Determination of Field Output Correction Factors in Small Static Photon Fields Following TRS-483 CoP. Presenter: Nkosingiphile Maphumulo, National Metrology Institute of South Africa, South Africa; Author: Nkosingiphile Maphumulo

#120 Verification of Two Beam-Matched Linear Accelerators Using Volumetric Modulated Arc Therapy Plans. Presenter: Tinnagorn Donmoon, Department of Radiotherapy, Mahavajiralongkorn Thanyaburi Hospital, Thailand; Author: Tinnagorn Donmoon

#134 Evaluation of Knowledge-Based Planning of Volumetric Modulated Arc Therapy (VMAT) for Nasopharyngeal Cancer. Presenter: Kishore Joshi, Department of Radiation Oncology, Actrec, Tata Memorial Centre, India; Authors: Kishore Joshi; Jamema Swamidas; Co-Authors: Sarbani Ghosh Laskar; Subhabrata Ghosal; Jeevanshu Jain; Reena Devi Phurailatpam; Shrikant Kale; Naveen Mummudi; Jai Prakash AgarwAL

#136 Dosimetric Comparison of VMAT and IMRT for NPC and Prostatic Carcinoma. Presenter: Sadia Sadiq, Pakistan Atomic Energy Commission, Pakistan; Authors: Sadia Sadiq; Nauman Amjad

#137 Total Marrow with Lymphoid Irradiation (TMLI) as a Conditioning Regimen Using VMAT Technique: Planning and Dosimetry Validation. Presenters: Reena Devi Phurailatpam, Homi Bhabha National Institute, India; Authors: Reena Devi Phurailatpam; Kishore Joshi; Supratip Kapat; Ann Christy Saju; Jayant S. Goda ; Chandrasekhar Tambe; Rajesh Kinhikar; Siddhartha S Laskar

#139 A Measure of the Target Reposition Errors for Lung Volumetric Arc Therapy as Observed on Three-Dimensional Cone-Beam Computed Tomography, in a Single Radiotherapy Department in Malta. Presenter: Maria Elena Grech, Sir Anthony Mamo Oncology Centre, Malta; Author: Maria Elena Grech; Co-authors: Gemma Burke; Dorothy Anne Aquilina

#140 Bladder Filling Before Radiation Therapy Treatments to the Prostate – Evaluating Volume, Dose and reproducibility of Constraints. Presenter: Ilya Lvovich, Rambam Health Care Center, Israel; Authors: Ilya Lvovich; Tomer Charas; Eleonora Kuptzov; Orit Kaidar-Person; Riki Carmi; Rima Bahchevan; Egor Borozov; Salem Billan

Audits, Quality, Safety

#18 Safety in Radiation Oncology (SAFRON) Incident Learning System in the Philippines: Learning through Experience. Presenter: Jerickson Abbie Flores, Jose R. Reyes Memorial Medical Center, Department of Radiotherapy, Philippines; Authors: Jerickson Abbie Flores; Jaffar Pineda; Lilian Rodriguez; Miriam Joy Calaguas; Jake John Galingana; Margareth Tavas-Agustin; Jhonatan Riparip; Rolando Toledo; Julia Vales; Eleanore Florida Altubar

#21 Obstacles in Error Reporting System Among Radiotherapy Facilities: Basis for an Enhanced ILS Policy. Presenter: Jhonatan Riparip, Jose R. Reyes Memorial Medical Center, Department of Radiotherapy, Philippines; Authors: Jhonatan Riparip; Jerickson Abbie Flores; Juan Carlo Bentinganan; Lilian Rodriguez; Julia Vales; Jake John Galingana

#30 Failure Modes and Effects Analysis in Image Guided High-Dose-Rate Brachytherapy: A Single Institutional Study. Presenter: Jaffar Pineda, Jose R. Reyes Memorial Medical Center, Department of Radiotherapy, Philippines; Author: Jaffar Pineda; Co-authors: Jerickson Abbie Flores; Margareth Tavas-Agustin; Lilian Rodriguez; Rolando Toledo; Eleanore Florida Altubar

#42 Implementation of a Comprehensive Verification Program for 3D High-Dose Rate Brachytherapy Plans: “QA-Brachy”. Presenter: Eliana Quinteros, Leben Salud, Argentina; Author: Eliana Quinteros; Co-authors: Ricardo Ruggeri; Joaquin De Brida; Maria Sol Gallo

#62 Analysis of the Fricke-Pmma Interaction and its Effects in Fricke Dosimetry. Presenter: Arissa Pickler, LCR/UERJ, Brazil; Author: Arissa Pickler; Co-authors: Andrea Mantuano; Camila Salata; Carla L. Mota; Mariano G. David; Glorimar J. de Amorim; Luís A.G.

#135 Comparison of Monitor Units and Dose Calculation Between Two Independent Second-Check Verification Software. Presenter: Manuel Castrillon, Clinica Las Condes, Chile; Authors: Manuel Castrillon; Jose Rodriguez

#143 Optimising Learning from a National Incident Learning System in Radiotherapy: The PHE Experience. Presenter: Una Findlay, Public Health England, United Kingdom; Author: Una Findlay

Medical Physics Education

#70 A comparative Study of two Treatment Planning Systems for IMRT Optimization. Presenter: Mwape Mofya, Cancer Diseases Hospital, Zambia; Authors: Mwape Mofya; Marco D'andrea; Lidia Strigari

#78 Small‐Field Output Factor Determination for Versa HD Flattened and Flattening Filter‐Free Beams with Various Detectors. Presenter: Saba Hussain, International Center for Theoratical Physics (ICTP)/University of Trieste, Italy; Author: Saba Hussain; Co-authors: Mariaconcetta Longo; Stefania Cora; Francescon Paolo

#105 Statistical Control Process in Tomotherapy Pre-Treatment QA. Presenter: Rosa Petit, International Center for Theoretical Physics (ICTP); Authors Rosa Petit; Eleonora Vanzi; Gianmarco De Otto; Micheangelo Biondi; Fabrizio Banci

#115 Brain Radiotherapy During Pregnacy: A Dosimetric Study for Fetal Dose With OSLD. Presenter: Edith Villegas Garcia, International Center for Theoretical Physics (ICTP); Authors:Edith Villegas Garcia; Federica Guida; Alessandra Germani; Francesca de Monte; Marco Fusella; Antonella Roggio; Alessandro Scaggion; Roberto Zandona; Fabio Busato; Marta Paiusco

#124 Confidence in 6 MV and 6 MV FFF VMAT EPID QA Adopting the AAPM-TG119 Approach. Presenter: Mohammed Abujami, International Center for Theoretical Physics (ICTP); Author: Mohammed Abujami; Co-authors: Stefano Riga; Marco Felisi; Angelo Filippo Monti; Maria Grazia Brambilla; Claudia Carbonini; Hae Song Mainardi; Cristina De Mattia; Maria Bernadetta Ferrari; Alberto Torresin

Clinical Research

#7 The Distribution and Treatment Outcomes of Paediatric Cancer Patients Referred for Radiotherapy in Low and Middle-Income Countries – The Uganda Experience. Presenters: Awusi Kavuma; Daniel KanyIKE, Uganda Cancer Institute – Kampala, Uganda; Author: Awusi Kavuma; Co-authors: Daniel Kanyike; Israel Luutu

#31 The Immunomodulating Effects of Biobran (Rice Bran Arabinoxylan Compound) on Hematologic Profile, Nutritional Status and Quality of Life among Head and Neck Carcinoma Patients Undergoing Radiation Therapy: A Double Blind Randomized Control Trial. Presenter: Dorothy Faye Tan, Jose R Reyes Memorial Medical Center, Philippines, Searog; Authors: Dorothy Faye S. Tan; Jerickson Abbie S. Flores; Co-Author: Mary Ann Reyna

#36 Induction Chemotherapy Followed by Concurrent Chemoradiotherapy in a 14 Year Old Patient With Poorly Differentiated Nasopharyngeal Carcinoma: A Case Report on the use of the ARAR0331 Protocol. Presenter: Marc Vincent Barcelona, Jose R. Reyes Memorial Medical Center, Philippines; Author: Marc Vincent Barcelona; Co-authors: Jerickson Abbie Flores; Mario GO Jr.; Jochyrs Estanislao

#39 Treatment Outcome Comparison Between 33 Versus 35 Fractions Among Nasopharyngeal Carcinoma Using Helical Approach: A Retrospective Study. Presenter: Misael Cruz, Central Luzon Integrated Oncology Center, City of San Fernando Philippines, Philippines; Authors: Misael Cruz; Mary Ann Rose Agustin; Madonna Valenzuela

#40 Randomized Controlled Trial Comparing Virgin Coconut Oil and Salt and Soda Mouthwash Versus Salt and Soda Mouthwash Alone in Preventing Grade 2 and Above Radiation- Induced Mucositis In Patients With Nasopharyngeal Carcinoma (VCO-PRIM STUDY). Presenter: Misael Cruz, Central Luzon Integrated Oncology Center, City of San Fernando Philippines, Philippines; Authors: Misael Cruz; Enrico Tangco; Marigie Olvina; Thelma Sarmiento; Gonzalo Banuelos; Cyndy Pusag; Carl Ruperto Aguilar; M.A. Habana; C. Cordero; J. Mantaring

#96 What is the Optimal Radiotherapy Regimen for Thoracic Palliative Radiotherapy in Lung Cancer? Presenter: Meriem Bohli, Radiotherapy Department, Abderrahman Mami Hospital, Tunisia; Author: Meriem Bohli; Co-authors: Dorra Aissaoui; Raouia Ben Amor; Ghada Abdessatar; Jamel Yahyaoui; Rim Moujahed; Awatef Hamdoun; Lotfi Kochbati

#97 Evolution and Prognosis of Juvenile Nasopharyngeal Carcinoma: Results from of a Study on 68 Children in Salah Azaiz Institute in Tunisia. Presenter: Semia Zaraa, Salah Azaiz Institute, Department of Radiotherapy, Faculty of Medicine, Tunisia; Authors: Semia Zaraa; Safia Yahyaoui; Co-authors: Noubbigh Ghaiet El Fida; Souheil Jebali; Said Gritli; Chiraz Nasr

#99 Stereotactic Radiotherapy for Brain Metastases: Experience of Salah Azaiez Institute in Tunisia. Presenter: Alia Mousli, University Tunis El Manar, Tunisia; Author: Alia Mousli; Co-authors: Khalil Mahjoubi; Lotfi Ben Salem; Mounir Besbes; Chiraz Nasr; Asma Belaid

#123 Effectiveness of Single Fraction Radiotherapy (8Gy) in Metastatic Spinal Cord Compression. Presenter: Raouia Amor, Radiation Oncology Department, Abderrahmen Mami Hospital, Tunisia; Authors: Raouia Ben AMOR; Meriem Bohli; Dorra Aissaoui; Lotfi Kochbati

Health Economics and Health Systems Research

#22 Patterns of Radiotherapy Practices in Breast Cancer in Asia: A Challenge in Diversity. Presenter: Miriam Joy Calaguas, St. Luke’s Medical Center, Philippines; Authors: Miriam Joy Calaguas; Jerickson Abbie Flores; Candice Chin-Chin Yui

#23 Impact of Covid-19 in Radiation Oncology Practice in the Philippines: A Situational Analysis. Presenter: Jerickson Abbie Flores, Jose R. Reyes Memorial Medical Center, Philippines; Authors: Jerickson Abbie Flores; Misael Cruz; Gonzalo Banuelos; Thelma Sarmiento; Enrico Tangco; Fritzie Villegas; Marigie Olvina; Carl Ruperto Aguilar; Cyndy Pusag; Jaemelyn Marie Fernandez-Ramos; Katherine Sebastian- Enriquez; Karl Jeremy Lo

#35 Responding to the COVID-19 Pandemic: Perspectives from Two Radiation Oncology Departments in the Philippines. Presenter: Thomas Vincent Vergara, St. Luke’s Medical Center - Quezon City, Philippines; Author: Thomas Vincent Vergara; Co-authors: Miriam Joy Calaguas; Manuel Martin Lopez; Juan Martin Magsanoc; Angela Pena-Camacho; Angela Gaerlan-Tagle; Caissa Elvira Tangco-Abao

#49 Breaking COVID-19 Transmission: Leveraging on Telemedicine for Cancer Management in Indonesia. Presenter: Handoko Handoko, Faculty of Medicine, Universitas Indonesia – Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital – Jakarta, Indonesia; Authors: Handoko Handoko; Nicholas Nicholas; Endang Nuryadi; Denny Handoyo; Soehartati A Gondhowiardjo

#52 Indonesia National Action Plan for Cancer Control 2020 – 2024. Presenter: Soehartati A Gondhowiardjo, Faculty of Medicine, Universitas Indonesia – Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital – Jakarta, Indonesia; Authors: Soehartati A Gondhowiardjo; Tiara Bunga Mayang Permata; Steven Octavianus; Nurhanita Nurhanita; Novi Elis Khumaesa; Putri Maharani; Nicholas Nicholas; Lusi Tania Rahmartani

#54 Leveling of Radiation Oncology Services in Indonesia. Presenter: Angela Giselvania, Faculty of Medicine, Universitas Indonesia – Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital – Jakarta, Indonesia; Authors: Angela Giselvania; Steven Octavianus; Handoko Handoko; Henry Kodrat; Sri Mutya Sekarutami; Soehartati A Gondhowiardjo

#55 Human Resources and Facilities for Radiotherapy Service Requirements in Indonesia: A Prediction Model over a Ten-year Period. Presenter: Melyda Melyda, Faculty of Medicine, Universitas Indonesia – Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital – Jakarta, Indonesia; Authors: Angela Giselvania; Steven Octavianus Melyda Melyda; Steven Octavianus; Soehartati A Gondhowiardjo

#114 Current Status of Radiation Oncology Services in Paraguay. Presenter: Julio Rojas Martinez, Instituto Nacional del Cancer, Paraguay; Authors: Julio Rojas Martinez; Guisella Raquel Rivelli Zea

#121 Is Hypofractionated Radiotherapy in Breast Cancer a Cost–Effective Approach? Presenter: Raouia Amor, Radiation Oncology Departement, Abderrahmen Mami Hospital, Tunisia; Authors: Meriem Bohli; Raouia Ben Amor; Dorra Aissaoui; Lotfi Kochbati

Implementation of New Technologies

#10 Prostate cancer: Simultaneous integrated boost with Radixact® System, about a series of 74 patients. Presenter: Mohammed Chabani, Central Hospital of The Army, Radiation Oncology, Algiers, Algeria; Authors: Mohammed Chabani; Imad Ararem; Samia Chami

#26 Geometrical Analysis of IMRT/VMAT on Head and Neck Case Using New and Reused Thermoplastic Mask in Dharmais Hospital National Cancer Center Indonesia. Presenter:  Kartika Erida BROHET, Radiotherapy department, Dharmais Hospital National Cancer Center (Indonesia National Cancer Center), Indonesia; Authors: Kartika Erida Brohet; Syarifatul Ulya

#69 Transitioning from 2-D to 3-D Image-Guided Brachytherapy (IGBT) in Gynecologic Malignancies in the Philippines: Looking Back and Moving Forward. Presenter: Jaymee Fernandez-Ramos, Department of Radiotherapy, Jose R. Reyes Memorial Medical Center, Manila, Philippines; Authors: Miriam Joy Calaguas; Jerickson Abbie Flores; Jaemelyn Fernandez-Ramos; Lilian Rodriguez; Rey Delos Reyes

#74 Adaptation of an Extended Five Field technique for the treatment of Head & Neck Cancer at Cancer Diseases Hospital. Presenter: Kennedy Lishimpi, Cancer Diseases Hospital, Zambia; Authors: Kennedy Lishimpi; Barbara Chanda M’ule

#106 Can Accelerated Hypofractionated Radiotherapy (AHRT) Be an Acceptable Treatment Option in Inoperable Non-Small Cell Lung Cancer Myanmar Patients? Presenter: Shoon Mya Aye, Radiotherapy department, Yangon General Hospital, Myanmar; Author: Shoon Mya Aye; Co-authors: Lin Lin Kyi; Moe Hlaing; Aye Aye Myint; Khin Cho Win

#112 Treatment Outcomes of Stereotactic Body Radiotherapy for Early Stage Non-Small-Cell Lung Cancer and Lung Metastasis. Presenter: Thongtra Nanna, Ramathibodi Hospital, Mahidol University, Thailand; Author: Thongtra Nanna; Co-authors: Keeratikarn Boonyawan; Putipun Puataweepong; Thitiporn Suwatanapongched; Nattinee Wattakiyanon; Rawee Ruangkanchanasetr; Thiti Swangsilpa

Radiobiology

#27 Correlation Between the Levels of Salivary Α-Amylase Activity and Xerostomia in Head and Neck Cancer Patients Undergoing Radiation Therapy. Presenter: Edwin Mark Chiong, Jose R. Reyes Memorial Medical Center, Philippines; Authors: Edwin Mark Chiong; Jerickson Abbie Flores

#50 Precision Medicine in Radiotherapy; Discover a Potential Biomarker for Treatment Resistance. Presenter:  Endang Nuryadi, Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia; Authors: Endang Nuryadi; Handoko Handoko; Co-Authors: Takahiro Oike; Handoko Handoko; Tiara Bunga Mayang Permata; Tatsuya Ohno; Soehartati A. Gondhowiardjo

#56 In Vitro Study of Various Extracts and Bioactive Compounds Potential Role in Increasing Radiation Efficacy in Human Cancer Cell Lines. Presenter: David Andi Wijaya, Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia; Authors: Endang Nuryadi; Handoko Handoko; David Andi Wijaya; Soehartati A. Gondhowiardjo; Co-authors: Tiara Bunga Mayang Permata; Agung Tri Cahyono, Aslim Taslim, Tisa T. Putri, Henry Kodrat, Ida Ayu T. Kumala Dewi, Sri Mutya Sekarutami

#72 Feasibility on use of Gel Electrophoresis-Based Quantification of DNA Double Strand Break. Presenter: Jose Raj, Christian Medical College, India; Author: Jose Raj; Co-authors: Rabi Singh; Timothy Santhosh